import pymysql
class DB:
    def __init__(self):
        self.conn = pymysql.connect(host='localhost',port=3306,user='root',
        password='root',charset='utf8',db='workf',cursorclass=pymysql.cursors.DictCursor)
        self.cursor = self.conn.cursor()
        #添加，修改，删除
    def insert(self,sql):
            self.cursor.execute(sql)
            self.conn.commit()


        #查询一条记录
    def find(self,sql):
            self.cursor.execute(sql)
            return self.cursor.fetchone()

db1 = DB()